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Patnted Aug. 23, |898.

F. I. DANA TENTERING MACHINE.

(Application ma vmy 14, 1897.)

3 Sheets-Sheet I.

(No Model.)

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No. 609,574. Parented Aug. 23, |898. F. I. DANA.

TENTERING MACHINE.

(Application led May 14, 1897.) (No Model.)

v 3 Sheets-Sheet 2.

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Nu. 609,574. Fatented Aug. 23, |898.. F. DANA.

TENTERING MACHINE.

(Application Bled May 14, 1897.) 1 (No Model.) 3 Sheets-Sheet 31.

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Nrn *pit/Virusk APATENT FREDERICK I. DANA, OF PROVIDENCE, RHODE ISLAND,`ASSIGrNOR TO THE THOMAS PHILLIPS COMPANY, OFSAME PLACE.

SPECIFICATION forming part of Letters Patent No. 609,574, dated August23, 1898.

Application nea May 14., 1897.

To @ZZ whom t may concern:

Be it known that I, FREDERICK I. DANA, of the city and county ofProvidence, in the State of Rhode Island, have invented certain new anduseful Improvements in Tentering- Machines; and I do hereby declare thefollowing specication, taken in connection with theaccompanyingdrawings, forming a part of the same, to be afull, clear,and exact description thereof. p

The present invention relates to machines for tentering cloth in whichtravelingchains provided with clamps or pins to engage and carry thecloth are caused to travel along guide-rails which are given areciprocating movement as the chains feed the cloth through the machine.

A feature of the invention relates to a mechanism for reciprocating theguide-rails which shall give to said rails the same motion on both theirforward and backward strokes, so that a runiform finish will be given tothe cloth, which is not the case when the motion of the rails in onedirection varies from the motion in the other direction. Vhile it ispreferred to connect the mechanism forming this feature of the inventionto the rails inde-` pendent of theconveyer-operating mechan ism, it willbe understood that, so far as this feature of the invention isconcerned, the counection to the rails may be made through theconveyer-operating mechanism.

The invention also includes the further feature hereinafter described,and set forth in the claims.

Referring to the drawings, Figure 1 is a side elevation of so much of atentering-machine as is necessary to show the application of the presentinvention. Fig. 2 is a plan view of the same,A partly in section. Fig. 3is an end elevation of the same, partly in section. Fig. 4 is asectional viewon `line 4 4, Fig. 1. Figs. 5 and 6 are views showing amodification to be described. Fig. 7 is aview of a further modification.

The guide-rails l extend longitudinally of the machine and are providedwith suitable guides for the conveying devices andare pivoted on blocks2, adjustably mounted on transverse frames or supports 3, said blocksbeing adjusted by means of the screw-rods 4 srie No. 636,588. No model.)

'in the usual manner. The frames 3, varying in number according to-thclength of the machine, are pivoted upon standards 5, as shown at theright in Fig. 1. The guide-rails 1 carry the sprocket-Wheels 6, aroundwhich the conveying-chains pass and which serve to operate said chains.The shafts on which the sprocket-wheels 6 are secured pass through shaft9 is provided with rollers 14 at its ends, which rest upon the supports15 and serve tol `aid in supporting the said shaft.

A bevelgear 16 isy secured to shaft 9 and is engaged anddriven by abevel-gear 17, secured to the vertical shaft 13. A bevel-gear 18 issecured to the shaft 13'and is engaged by a bevel-gear 19, secured tothe main driving-shaft 20, which carries a pulley 21 upon its outer end,Vto which power is applied.

The mechanism for reciprocating the guiderails 1 instead of beingconnected to the rails through the transverse shaft 9, as has heretoforebeen customary, is connected with the rails independent of said shaft,so that said shaft is relieved of the strain heretofore put upon it,withrthe result that there is no liability of springing said shaft, andthus interferingowith the proper action of the mechanism for driving theconveying-chains, and with the further result that the `movement of 'theguide-rails is not dependent upon the proper 4 action ofthe mechanismfor driving the con veying-chains. In Figs. 1, 2, and 4 is shown onemanner of thus connecting the mechanism for reciprocating theguide-rails, and in said figures is also shown the preferredformofreciprocating mechanism, which in itself forms one feature of thepresent improvements and is not dependent upon the manner of connectingthe sameto the rails for its novelty. In said figures the reciprocationof 'the guide-rails is effected as follows: An arm 22 is secured to oneof the cross frames or supports 3, preferably to that support which isIOO located at or near the center of the machine. The arm 22 isconnected, by means of a link 23, to a cross-head 24, sliding on guides25, mounted upon the standard 26. The crosshead 24 is provided with aslot 27, and a crankpin 28, secured to a disk 29, works in said slot andserves to reciprocate the cross-head 24. The disk 29 is provided with aseries of holes 30,l arranged at varying distances from the center ofsaid disk, and the length of the reciprocation imparted to thecross-head and to the rails may be varied by securing the crankpin 28 indifferent holes. The disk 29 is secured to a shaft 31, mounted inbearings in standard 26 and having secured thereon a bevel-gear 32,which is engaged and driven by a bevel-gear 33 on a shaft 34. The shaft34 is driven from the main driving-shaft 20 through the shaft 35 andgears 36. The shaft 20 has secured thereto two gears 37 38, of differentdiameters, which engage gears 39 40, respectively, loosely mounted onshaft 35. The gears 39 40 are provided with clutch-faces adapted to beengaged by the clutches 41 42, respectively, splined to the shaft 35 andoperated by the levers 43 44. By throwing the clutch 42 into engagementand clutch 41 out of engagement the shaft 35 will be driven by the pairof gears 38 40 and the guide-rails will make a certain number ofreciprocations for a given length of cloth fed through the machine, andby throwing the clutch 41 in and clutch 42 out the number ofreciprocations for the same length of cloth may be varied.

Instead of connecting the mechanism for reciprocating the guide rails tosaid rails through the medium of one'of the transverse supports saidmechanism may be and preferably is connected directly to theguide-rails, and in Figs. 5 and 6 is shown the preferred manner of thusconnecting one form of such mechanism. A transverse bar or rod 45 ispivoted to the rails 1 by means of blocks 46,

secured to said bar, and provided with studs 47, which project throughbearings 48 in the brackets 49, secured to the rails 1. Collars 50 aresecured to the upper ends of the studs 47 and serve to hold the studs inthe bearings. The bar 45 is provided with two arms 51, which areconnected by means of the links 52 with a cross-head 53, mounted onguides 54.

The cross-head 53 is provided with a slot 55, in which works a crank 56,secured to a crank-disk 57, said disk being driven from the maindriving-shaft through suitable gearing and shafting. As the cross-headis reciprocated the arms 51 and bar 45 oscillate aboutan axis midwaybetween the rails 1, and the rails are reciprocated. In order to allowthe transverse adjustment of the rails, it is preferred to fork the arm51 and secure the forked ends of the arms to the bar upon opposite sidesof the block 46. While it is preferred to use two arms 51, bothconnected to the cross-head 53, as with this construction the power isapplied directly to both of the rails and a more even motion is impartedthereto and the strain upon other parts of the machine lessened, yet itwill be understood that one arm 51 may be dispensed with, if desired,and the rails reciprocated by the use of a single arm.

In Fig. 7 is shown another manner of connecting the reciprocatingmechanism directly to the rails. In this construction one or both of therails is provided with a pivot 58, which is engaged by a slot inthe endof a lever 59, pivoted at and connected by means of a link 61 with across-head 62. The cross-head 62 is mounted upon guides 63 and isprovided with a slot 64. A crank-pin 65, secured to a disk 66, works inthe slot 64 and reciprocates the crosshead 62, said disk being drivenfrom a shaft 67 through the gears 68. The shaft 67 is driven from themain drivingshaft in the manner described with reference to shaft 34 ofFigs. 1, 2, and 4.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In a tentering-machine, the combination with guide-rails for theconveying devices, of mechanism for operating the conveying devices, across-head provided with a slot, a crank working in said slot, andconnections between said cross-head and said guide-rails whereby saidguide rails are reciprocated from said cross head, substantially asdescribed.

2. In a tentering-machine the'combination with guide-rails for theconveying devices of mechanism for operating the conveying devices,across-head provided with a slot,a crank working in said slot,an dconnections from said cross-head to each of said guide-rails.

3. In a centering-machine the combination with guide-rails for theconveying devices, of mechanism for operating th`e conveying devices, across-head provided with a slot,a crank working in said slot, atransverse bar pivoted to said rails, and connections between Veach 'endof said bar and said cross-head.

4. In a tentering-machine,the combination with guide-rails for theconveying devices, of mechanism for operating the conveying devices,across-head provided with a slot,a crank workin g in said slot, an armoscillating about van axis and connected with the rails, and a linkconnecting said arm and cross-head, substantially as described.

5. In a tentering-machine,the combination with guide-rails for theconveying devices, of mechanism for operating the conveying devices, across-head provided with a slot,a crank working in said slot, atransverse bar pivoted to said guide-rails and provided with an arm, anda link connecting said arm and crosshead, substantially as described.

6. In a tentering-machine, the combination with guide-rails for theconveying devices, of mechanism for operating the conveying devices, across-head provided with a slot, a crank workingin said slot, atransverse bar-pivoted IOC IIC

8. In a tentering-machine, the combination Wi th the guide-rails for theconveying devices, of mechanism for reciprocating said guiderails,mechanism for operating the conveying devices, a driving-shaft connectedWith said latter mechanism, a second shaft connected with theguide-rail-operating mechanism, a series of pairs of gears upon saidshafts, and

means for rendering any one of said pairs ofV gears operative,substantially asdescribed.

FREDERICK I. DANA.

Witnesses:

IRAI L. FISH, R. A. BATES.

